Calculator.



G. MUSGROVE.

CALCULATOR.

APPLICATION FILED PEB.24, 1914.

1,127,492, Patented Feb. 9, 1915.

Z SHEETS-SHEET 1.

RATES 25 :ClTY oz RURAL CARRIER:

naw/Mom C LYDE M USGROVE C. MUSGROVE.

CALCULATOR.

APPLICATION FILED 313.24, 1914.

1,127,492. Patented Feb.9, 1915.

2 SHEETS-SHEET 2.

awmutoz P2 CLYDE museRovrz 1x zoom (w mi muiw 89W UNITED STATES PATENT FFECE.

CLYDE MUSGROVE, OF EL RENO, QIILAHOMA.

CALCULATOR.

Application filed February 24, 1914.

'1 b all whom it may concern Be it known that I, CLYDE MUsGnoni, a citizen of the United States, residing at El Reno, in the county of Canadian and State of Oklahoma, have invented certain new and useful Improvements in Calculators, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in calculators and has relation more particularly to a device of this general character especially designed and adapted for use in determining the rates per pound of packages to be forwarded in accordance with the parcel post; and the object of the invention is to provide a device of this general character having novel and improved means whereby the rates per pound may be determined with convenience and facility in accordance with the zone in which the point of destination is located.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved calculator whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be. hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claim.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein- Figure l is a view in top plan of a calculator constructed in accordance with an embodiment of my invention; Fig. 2 is a sectional view taken substantially central of the device as illustrated in Fig. 1, and transversely through the assembled cylinders; Fig. 3 is a longitudinal sectional view taken through the cylinders of the core shown in elevation; Fig. 4: is a fragmentary view in plan of the chart herein employed; Fig. 5 is a fragmentary view in plan of that portion of the calculator intended to be employed with the local zone; Fig. 6 is a view in plan of the disk employed in connection with the device as illustrated in Fig. 5; and Fig. 7 is a fragmentary view of the interior cylinder embodied in the invention as herein set forth.

As disclosed in the accompanying draw- Specification of Letters Patent.

Patented 9, 1915.

Serial No. 829,826.

ings, 1 denotes a base of any desired configuration but herein disclosed as substantially rectangular in form and having supported thereabove adjacent one end by the webs or uprights 2, the horizontally disposed stationary cylinder 3 having its opposite ends open and being provided in its forward wall in close proximity to the top thereof with the elongated slot eldisposed substantialy the entire length of the cylinder, and disposed substantially perpendicular to the upper edge of the slot 4 are the graduations 5 dividing the upper marginal portions of the slot t into a series of blocks 6, for a purpose which will hereinafter be more fully set forth.

Directed through the stationary cylinder 3 is the inner cylinder 7 having its opposite ends adapted to be closed by the heads or caps 8 provided with the inwardly disposed annular flanges 9 overlapping the adjacent end portions of the stationary cylinder 3 whereby it will be readily perceived that the inner cylinder 7 may be rotated with convenience and facility by grasping either of the heads 8, or more particularly the flanges 9 thereof, by the fingers.

A herein disclosed, the connection be tween the inner cylinder 7 and the caps or heads 8 is effected by providing the opposite ends of the inner cylinder 7 with the diametrically opposed projections or tongues 10 adapted to pass through suitably positioned slots or openings 11 produced in the caps or heads, such projections or tongues 10 being properly flexed, after the parts are assembled, in a manner whic is believed to be self-evident.

Adjacent one end and at preferably the left side thereof the inner cylinder 7 is provided with the laterally disposed elongated slot 12, the extent of such slot being determined by the diameter of such inner cylinder for a reason which, it is thought, will be hereinafter self-evident. Also produced in the inner cylinder 7 lengthwise and obliquely thereof is a series of openings 14, the uppermost of such openings being substantially flush with the upper end of the transverse slot 12 and in close proximity thereto, while the lowermost opening 14 is in close proximity to the opposite end of the inner cylinder 7 substantially flush with the lower extremity of the slot 12 and, as herein Set forth, there is an opening 14: for

each of the zones as created under the provisos of the parcel post law from the 3d zone to the 8th zone each of such openings having positioned in longitudinal alinement therewith and disposed on the cylinder 7 proper, suitable identifying means 15 for determining the zone that the corresponding opening is designed to represent.

The caps or heads 8 are apertured at their axial centers, as at 16, and serve to afford suitable bearings for the trunnions 17 of the cylindrical core 18 adapted to be supported within the inner cylinder 7 and capable of rotative movement independently thereof, the outer extremities of such trunnions being extended a predetermined distance exteriorly of the heads or caps 8, as indicated at 19, whereby a convenient means is afforded for rotating such core 18, it being understood that such extremities 19 can be readily and conveniently grasped by the fingers of the operator.

Disposed on the periphery of the cylindrical core 18 is a chart 20 having produced thereon adjacent its left hand end, the in dications 21, herein disclosed as 1 to 20 successively, such identities being adapted to indicate the different weights of the parcels which may be transmitted through the mails from the 3d to the 8th zone and such identities are adapted to be exposed through that portion of the transverse slot 12 in the inner cylinder 7 intersecting the longitudinally disposed slot 4, in the stationary cylinder 3. In longitudinal alinement with each of the identities or characters 21 are the indications or characters 22 disposed in proper sequence and adapted to give the rate of postage required to transmit a package, within each of the several zones, of a weight denoted by the indication or character 21, it being understood that the indications or characters 22 are adapted to be exposed through the proper opening 14 when in register with the longitudinal slot 4.

In view of the foregoing, it is thought to be obvious that should it be desired to as certain the requisite postage to transmit a parcel weighing fourteen pounds to a point within the 4th opening, it is only necessary to rotate the cylinder core 18 until the indication or character 14 is exposed through the elongated opening 4 and to rotate the inner cylinder 7 until the opening 14 identified as the 4th zone is in register with such elongated slot 4 whereupon the indication or character 23 of the chart 20 will readily show that the cost of the stamps required will be fifty-nine cents.

The present provisos of the parcel post regulations permit transmission through the mails within the local or 1st zone of parcels weighing up to fifty pounds. It will therefore be seen that in order for the device, as herein set forth, to be employed to calculate with reference to these zones would require cylinders of great diameter. For this reason, I employ separate means for calculating with regard to these zones and, as herein disclosed, such means comprises the upwardly and rearwardly directed table 24 having its upper extremity substantially circular in form and having produced in one marginal portion and at preferably the left side thereof, the radially disposed horizontal slot 25 through which the requisite indications 26 and 27 may be exposed, such indications being suitably produced on a disk 28 adapted to revolve beneath the circular portion of the table 24 as herein disclosed. The disk 28 is rotated through the medium of the shaft member 29 disposed at the axial center thereof and directed through the circular extremity of the platform 24, the forward or projected portion of such. shaft serving as a means whereby such disk may be properly rotated by the fingers of the operator, as is believed to be self-evident. It is thought to be obvious that the indications or characters 26 serve to denote the number of pounds while the characters or indications 27 serve to denote the amount of postage required to transmit a package of a given weight to points of destination within either the local or 1st zone.

In view of the foregoing, it is thought to be obvious that a calculator constructed in accordance with an embodiment of my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and by reason of the readiness and despatch with which the requisite amount of postage to transmit a parcel to a point within a given zone may be computed, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

I claim:

A device of the character described comprising a stationary tubular member having its ends open, an inner cylinder positioned within the stationary tubular member, caps for the inner ends of the inner cylinder provided with peripheral flanges overlying the periphery of the stationary tubular member, said caps and cylinder being fixedly connected, said caps serving as a means to impart axial rotation to the cylinder, a core positioned within the inner cylinder and capable of axial rotation, and In testimony whereof I hereunto afiix my trunnions projecting from the opposite ends signature in the presence of two Witnesses. of the core at the axis thereof and disposed through the caps whereby said core is ro- CLYDE MUSGROVE. tatably supported by the caps, the projected Witnesses:

portions of said trunnions serving as means C. G. VVATTSON,

whereby said core may be rotated. CHAS. A. FIGKLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

